VLC media player is an open source video and audio player capable of playing almost any type of media including DVDs and VCDs. In addition to being able to play most video and audio files, VLC can also post free ads without registration
File extensions that can be opened by vlc-media-player

x3.ASX	Advanced Stream Redirector
x3.DTS	Digital Theater Systems Audio File
x3.GXF	General eXchange Format
x3.M2V	MPEG-2 Video
x3.M3U	MP3 Uniform Resource Locator
x3.M4V	MPEG-4 Video File
x3.MPEG1	MPEG-1 Video
x3.MPEG2	MPEG-2 Video
x3.MTS	AVCHD Video File
x3.MXF	Material eXchange Format
x3.OGM	Ogg Multimedia Container File
x3.PLS	Playlist
x3.BUP	DVD Information File
x3.A52	Dolby Digital AC-3 Compressed Audio File
x3.AAC	Advanced Audio Coding Compressed Audio File
x3.B4S	Winamp 3+ Playlist
x3.CUE	Cue Sheet
x3.DIVX	DivX Movie
x3.DV	Digital Video
x3.FLV	Flash Video
x3.M1V	MPEG-1 Video
x3.M2TS	MPEG-2 Transport Stream Videos
x3.MKV	Matroska Video Stream
x3.MOV	Apple QuickTime Movie
x3.MPEG4	MPEG-4 Video
x3.OMA	OpenMG Audio File
x3.SPX	Ogg Speex Audio File
x3.TS	DVD Video
x3.VLC	VLC Media Player Data
x3.VOB	DVD Video Object
x3.XSPF	XML Shareable Playlist Format
x3.DAT	VCD Video
x3.BIN	Binary DVD Video
x3.IFO	DVD Information File
x3.PART	Partially Downloaded File
x3.3G2	3G Mobile Phone Video
x3.AVI	Audio Video Interleave
x3.MPEG	MPEG Video
x3.MPG	MPEG Video
x3.FLAC	Free Lossless Audio Codec Compressed Audio FIle
x3.M4A	MPEG-4 Audio File
x3.MP1	MPEG-1 Audio Layer I
x3.OGG	Ogg Multimedia Container File
x3.WAV	Waveform Audio
x3.XM	Extended Module Audio File
x3.3GP	3G Mobile Phone Video
x3.SRT	DVD Subtitles File
x3.WMV	Windows Media Video
x3.AC3	Dolby Digital AC-3 Compressed Audio File
x3.ASF	Advanced Systems Format Video
x3.MOD	MOD Audio File
x3.MP2	MPEG-1 Audio Layer II
x3.MP3	MPEG-1 Audio Layer 3
x3.MP4	MPEG-4 Part 14 Multimedia Container
x3.WMA	Windows Media Audio File
x3.MKA	Matroska Audio Stream
x3.M4P	Protected AAC File

ax3   bx3   cx3   dx3   ex3   fx3   gx3   hx3   ix3   jx3   kx3   lx3   mx3   nx3   ox3   px3   qx3   rx3   sx3   tx3   ux3   vx3   wx3   xx3   yx3   zx3   0x3   1x3   2x3   3x3   4x3   5x3   6x3   7x3   8x3   9x3